ProofGate

What it does

ProofGate is a read-only release and experiment control room that turns scattered evidence into one explainable, human-owned decision point. Three Mozaik agents independently inspect build integrity, release policy, and experiment safety. Their typed observations flow into a shared event ledger, where a deterministic attestor returns BLOCKED or READY_FOR_HUMAN. Missing, invalid, failing, or unavailable evidence closes the gate. ProofGate never deploys, rolls back, changes flags, or writes to production. The demo uses reproducible synthetic fixtures and requires no private data or model credentials.

How the agents run concurrently

ProofGate creates and joins three Mozaik agents before broadcasting one case.announced event. That event starts an independent runLoop for the build, policy, and experiment agents, so all three checks overlap rather than handing work through a sequence. Each loop reads its own synthetic evidence tool and publishes typed lifecycle and observation events to a shared ledger. ProofGate records three distinct loop IDs and reports concurrency only when every loop starts before the first inference completes. The deterministic attestor consumes validated shared state; a slow, failed, or missing participant remains visible and forces BLOCKED.